| // Ben messing around... |
| |
| #include "httpd.h" |
| #include "http_config.h" |
| #include "apr_general.h" |
| #include "util_filter.h" |
| #include "apr_buckets.h" |
| #include "http_request.h" |
| |
| static const char s_szCaseFilterName[]="CaseFilter"; |
| module case_filter_module; |
| |
| typedef struct |
| { |
| int bEnabled; |
| } CaseFilterConfig; |
| |
| static void *CaseFilterCreateServerConfig(apr_pool_t *p,server_rec *s) |
| { |
| CaseFilterConfig *pConfig=apr_pcalloc(p,sizeof *pConfig); |
| |
| pConfig->bEnabled=0; |
| |
| return pConfig; |
| } |
| |
| static void CaseFilterInsertFilter(request_rec *r) |
| { |
| CaseFilterConfig *pConfig=ap_get_module_config(r->server->module_config, |
| &case_filter_module); |
| |
| if(!pConfig->bEnabled) |
| return; |
| |
| ap_add_output_filter(s_szCaseFilterName,NULL,r,r->connection); |
| } |
| |
| static apr_status_t CaseFilterOutFilter(ap_filter_t *f, |
| apr_bucket_brigade *pbbIn) |
| { |
| apr_bucket *pbktIn; |
| apr_bucket_brigade *pbbOut; |
| |
| // XXX: is this the most appropriate pool? |
| pbbOut=apr_brigade_create(f->r->pool); |
| APR_BRIGADE_FOREACH(pbktIn,pbbIn) |
| { |
| const char *data; |
| apr_size_t len; |
| char *buf; |
| apr_size_t n; |
| apr_bucket *pbktOut; |
| |
| if(APR_BUCKET_IS_EOS(pbktIn)) |
| { |
| // XXX: why can't I reuse pbktIn??? |
| apr_bucket *pbktEOS=apr_bucket_eos_create(); |
| APR_BRIGADE_INSERT_TAIL(pbbOut,pbktEOS); |
| break; |
| } |
| |
| // read |
| apr_bucket_read(pbktIn,&data,&len,APR_BLOCK_READ); |
| |
| // write |
| buf=apr_palloc(f->r->pool,len); |
| for(n=0 ; n < len ; ++n) |
| buf[n]=toupper(data[n]); |
| |
| // XXX: should we use a heap bucket instead? Or a transient (in |
| // which case we need a separate brigade for each bucket)? |
| pbktOut=apr_bucket_pool_create(buf,len,f->r->pool); |
| APR_BRIGADE_INSERT_TAIL(pbbOut,pbktOut); |
| } |
| |
| // XXX: is there any advantage to passing a brigade for each bucket? |
| return ap_pass_brigade(f->next,pbbOut); |
| } |
| |
| static const char *CaseFilterEnable(cmd_parms *cmd, void *dummy, int arg) |
| { |
| CaseFilterConfig *pConfig=ap_get_module_config(cmd->server->module_config, |
| &case_filter_module); |
| pConfig->bEnabled=arg; |
| |
| return NULL; |
| } |
| |
| static const command_rec CaseFilterCmds[] = |
| { |
| AP_INIT_FLAG("CaseFilter", CaseFilterEnable, NULL, RSRC_CONF, |
| "Run a case filter on this host"), |
| { NULL } |
| }; |
| |
| static void CaseFilterRegisterHooks(void) |
| { |
| ap_hook_insert_filter(CaseFilterInsertFilter,NULL,NULL,APR_HOOK_MIDDLE); |
| ap_register_output_filter(s_szCaseFilterName,CaseFilterOutFilter, |
| AP_FTYPE_CONTENT); |
| } |
| |
| module case_filter_module = |
| { |
| STANDARD20_MODULE_STUFF, |
| NULL, |
| NULL, |
| CaseFilterCreateServerConfig, |
| NULL, |
| CaseFilterCmds, |
| NULL, |
| CaseFilterRegisterHooks |
| }; |